NYC 9/11 Public Portal Document
130 Cedar Street July 15, 2004
Selective Demolition and Façade Restoration Koenen Associates
B. Anchors and Ties
1. Wire Mesh: Galvanized sixteen (16) gauge steel wire, 1/4" square mesh, width •
1/2" less than wall thickness, by length to suit condition.
2. For anchoring masonry to structural steel provide anchors equal to No. 355 and
357 hot-dip galvanized steel anchors made by Hohmann & Barnard or approved
equal. Galvanizing shall conform to ASTM A-153, with zinc coating of 1.5 oz. of
zinc per sq. ft.
3. Approved Manufacturers: Heckmann Building Products, Hohmann & Barnard,
Inc., National Wire Products Industries, Inc., Dur-O-Wall or approved equal.
C. Control Joint Filler
1. Vertical Installation Within Concrete Masonry Wall: Extruded high grade
neoprene rubber, cross shape, for use with concrete masonry sash units, which
shall provide a force fit in the grooves of the sash block, and shall have 1/2"
diameter tubular ends (compressed 25% when Installed in 3/8" wide joint).
a. Provide the following sizes
1) 2-5/8" wide control joint fillers 4" block walls.
2) 4-5/8" wide for 6" block walls.
3) 6-5/8" wide for 8",10" and block walls.
b. Provide backer rod and sealant joint over joint filler as per drawings and
Section 07900 of these specifications.
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2. Isolation Joint Filler at Abutting Construction and at Intersecting CMU Walls:
Compressible and resilient closed cell neoprene gasket with pressure sensitive
adhesive backing, thickness 30% greater than thickness of joint. Acceptable joint
filler shall be "Everlastic, Type NN-1" by Williams Products, Inc., or approved
equal. Recess joint filler and install backer rod and sealant as per drawings and
Section 07900 of these specifications.
D. Through Wall Flashing
1. Provide sixty(60) mils thick uncured neoprene flashing material as manufactured
by Emseal. "Perm-A-Barrier" forty (40) mils thick self -adhering through wall
flashing made by W.R. Grace shall be an acceptable equal.
2. Provide Manufacturer's recommended cleaner, primer and adhesive to be used In
conjunction with flashing material.
2.02 MORTAR MATERIALS
A. Portland Cement ASTM C150 Type 1, standard color, one source.
B. Hydrated Ume: ASTM C207, Type S, as manufactured by Corsons, or approved equal.
C. Sand: Clean, washed, buff colored sand, graded per ASTM C144.
D. Water Clean, fresh and suitable for drinking.
2.03 MORTAR MIX
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Unit Masonry 04200-3
NYC-WTC 000125160
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